Catalytic feasibility of Ce-doped LaCoO_(3) systems for chlorobenzene oxidation:An analysis of synthesis method  

作　　者：Héctor Acosta Pérez Carlos A.López Luis E.Cadús Fabiola N.Agüero 

机构地区：[1]Chemical Technology Research Institute(INTEQUI),UNSL-CONICET,Faculty of Biochemical Chemistry and Pharmacy(UNSL),Almirante Brown 1455,5700,San Luis,Argentina

出　　处：《Journal of Rare Earths》2022年第6期897-905,I0002,共10页稀土学报（英文版）

基　　金：The financial support from Universidad Nacional de San Luis,CONICET,ANPCyT。

摘　　要：A family of Ce-doped LaCoO_(3) perovskites are presented as possible catalysts for Cl-VOCs elimination.These materials with different contents of Ce were obtained through the citrate and the reactive grinding methods.The insertion of Ce in the original perovskite structure favours the presence of Co^(2+)/Co^(3+) and Ce^(3+)/Ce^(4+) redox pairs and a higher content of oxygen vacancies that enhances the catalytic performance in chlorobenzene combustion based on differential kinetics studies.The family obtained by the grinding method presents a performance as high as that synthesized by citrate method.Thus,the reactive grinding is a feasible green chemistry alternative to obtain a catalyst with the same performance as that obtained from traditional methods.Finally,the stability of samples was evaluated under total combustion reaction conditions showing an excellent activity during 45 h time on stream.

关 键 词：Cl-VOCs Perovskites CHLOROBENZENE CERIUM COBALT Rare earths 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程]